. >> reaching for the finish line, mitt romney and president obama continuing their last haul through the battleground states ahead of tuesday's election. >> later today, both candidates will be in ohio, a must-win for both campaigns. here brian mooar with that story from washington. >> former president bill clinton may have been losing his voice >> but he has done a good job with a bad hand. >> but in virginia, he spoke up for president obama, trying to soften up a critical swing state. >> we've made real progress, virginia. >> governor romney is trying to hold down iowa, a battleground state where he's fallen behind five points in the latest polls. >> with the vote of the people of iowa, we can't lose. >> the candidates cross paths within hours of each other as they barnstormed iowa and six other toss-up states, making their final arguments in the last weekend of the campaign. the president was joined by musicians john mellencamp and katy perry, and governor romney got a boost from nascar legend, richard petty. >> this is as much as you hear when you're in a nascar race. >> with onl